Thanks for the link.
What I get out of it is that the new model lets you chose between QPCM and PCM, but only Hitec Rx's can have QPCM and not all of them do. Here's what the FAQ says about Rx's:
Any modern FM receiver will work; all you need to do is make sure you have selected the proper shift in the menu. Hitec and Futaba are negative shift and Airtronics, JR and Multiplex are positive shift.
I don't think any of my stuff is PCM anyway. I've got 5 helis (if you count my Bladerunner). I'd just like to be able to use 1 Tx with all of them.
So, what do you think?